Sealand from Hetalia
Sealand is unofficially the smallest nation in the world. Dressed in a sailor suit, Sealand is the youngest and smallest character in the series. He was created after England made him, but left him in the middle of the sea and forgot about him. However, nobody recognizes Sealand as a nation in his own right.
He is voiced by Ai Orikasa in Japanese and Maxey Whitehead in English. Sealand as a teenager is voiced by Aaron Dismuke in English.